Mariah Carey Does Eminem

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In a very deserving turnaround, Eminem is the one being made fun of in a new video.

Former object of his affection, Mariah Carey, dresses up like the rapper in her video for her song, "Obsessed," where she just might be singing about Em.

"You're so lame....Ooh boy, why you so obsessed with me? Ohh finally found a girl that you couldn't impress/Last man on the earth/still couldn't get this," sings Mimi.

The back-story on these two is shady -- Em says they dated, Mariah says he wishes. Either way, Em started by dissing Mariah's hubby, Nick Cannon, in his song "Bagpipes From Baghdad." So, all's fair in love and war, kids.